Antique NELLIS H-28 Cast Iron Hay Harpoon Spear - Rare Working Farm ToolAntique NELLIS H 28 Cast Iron Hay Harpoon Spear Rare Working Farm Tool This is a genuine piece of American agricultural history: an antique hay harpoon manufactured by Nellis (Pittsburgh, PA). Dating back to the late 19th or early 20th century, these specialized tools were used with barn trolley systems to lift loose hay into lofts. Featuring a distinctive circular cast iron handle and a spring loaded trigger mechanism, this "primitive" tool is a